topic Re: How can I compare one surface with new survey points in Civil 3D Forum

How can I compare one surface with new survey points

ehsan_heidari70 — Thu, 06 Feb 2025 15:41:57 GMT

I have a big Surface that I want to compare survey point with surface offline(after survey).

I already import xml file on my ts16 and I can know how much is difference between my current heigt and surface online but when I Survey how can I export my height difference between survey point to surface?

there are too many points that I need quickly method to find them like Lisp or...?

and is there any method to export difference by TS16 on CSV file ?

TIA

Re: How can I compare one surface with new survey points

Pointdump — Thu, 06 Feb 2025 16:18:11 GMT

Hi @ehsan_heidari70,

Welcome to the Autodesk Forums.
Most data collector programs allow you to export a report comparing points to Existing Ground Surface. What data collector program are you using with your TS16?
Dave

Re: How can I compare one surface with new survey points

ehsan_heidari70 — Thu, 06 Feb 2025 17:50:56 GMT

Hi Dave,

thanks for your reply.

i used leica captivate but I don’t want to compare with existing ground surface , actually i must to set out and survey one surface which is top of bridge that we have 2 direction slop?

i am ok with set out , i can see online how much difference between my position and surface height but when i surveyed poits EDM just give me p number,X,Y,Z

but i need difference between my height and surface height

Re: How can I compare one surface with new survey points

Pointdump — Thu, 06 Feb 2025 20:53:15 GMT

@ehsan_heidari70,
"difference between my height[Existing Ground?] and surface height[Design Surface?]"
Create 2 surfaces and run an elevation analysis. Like >>>This<<<.
"set out and survey"
Your data collection will give you cut/fill for each shot.
More details please on what you have and what you want to do.
Dave

Re: How can I compare one surface with new survey points

ehsan_heidari70 — Fri, 07 Feb 2025 09:15:30 GMT

Hi Dave,

I watched that Video but it was not useful for me.

Maybe I cant explain well.

As you see on the attached files I must to make post pour As-Built Like that ,But bridge lenght is too long and i must to find one method to find it how much difference between my survey and design level.

Re: How can I compare one surface with new survey points

andrewpuller3811 — Sun, 09 Feb 2025 21:59:17 GMT

I was going to point you to the post by Tim Corey @tcorey that had a lisp that compared selected points to a selected surface but it has been archived by Autodesk.

Attached is a version that I modified for myself.

To use it, download the file, unblock the downloaded file.

Save the file to a local drive or trusted location.

Drag and drop the file into the civil 3d drawing area (or use the appload command)

Type the command psreport and hit enter

Follow the prompts to select a reference surface, then the cogo points.

The cogo points need to be within the area of the surface otherwise you will get an error.

A file named PointDepth.csv will be created in the folder where your drawing is located.

All credit for the attached lisp goes to Tim Corey.

Re: How can I compare one surface with new survey points

ehsan_heidari70 — Mon, 10 Feb 2025 11:29:15 GMT

Hi Andrew Puller,

It was very useful.

Thank you so much.

Re: How can I compare one surface with new survey points

ehsan_heidari70 — Thu, 13 Feb 2025 13:25:55 GMT

Hi Andrew,

that file Just give me cogo points Height and surface height with 2 number Precision but I want to Monitor Bridge that is very sensetive for us to get mm amount.

Any idea to fix it ?#

Thank you